Burning flank pain a mystery

[barefut]

Urologist says it's not kidney related - so what IS it?  

No blood in urine
No pain upon urination
Small stones present but not a problem

Diagnosed with diffuse scleroderma  2 1/2 years ago
Have moderate esophageal/GI involvement
as well as mild-moderate scarring of my lungs

Also dx w/endometriosis

This burning flank pain comes and goes in intensity ranging from a annoying 2 to an incapacitating 8.  No OTC meds help. Pain has presented on both sides but is usually more pronounced on one side  - this time its the right.

First occurence 10 years ago. Flares maybe 2 -3  times a year now, lasts weeks at a time.

Nerve pain?  Muscular?  All in my head?  

Frustrated!  Help!  Any ideas?

Going to try the Xanax doc prescribed......

[margypops]

Could it be sciatica does it go down your leg and your thigh, Xanax is an Anxiety drug you know,ask him if it will help the leg pain before you take it,Are you on any other meds can trigger it, sciatica Flares and goes away, sometimes returning ,they used to say it was caused by a virus, Asjk your Doc if it could be.